Rosonix Technology, Inc.

Any device whose MAC address begins with F8:7A:EF has a network interface built by Rosonix Technology, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

F8:7A:EF

Organization

Rosonix Technology, Inc.

Address

10F, No.235, Sec. 4, Chengde Rd., Taipei Taiwan TW 11167

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.